Walker, Anthony David Mortimer.Spalding, Dennis Raymond.Van der Merwe, Johannes Petrus.2014-11-192014-11-1919781978http://hdl.handle.net/10413/11610Thesis (Ph.D.)-University of Natal, 1978No abstract available.en-ZAElectron Optics.Electrostatic Lenses.Functions, Orthogonal.Theses--Physics.The analysis and optimization of electrostatic electron optical lenses with rotational symmetry, through use of orthogonal functions.Thesis